Feel free to use the following form to contact me (German/English only). My answer will include more personal contact information as appropriate.
If it has to be really fast, you may send me a message to my mobile phone. This is for friends and emergencies only.1)
Keep it private and secure… you may use the following to encrypt data for me or to verify my signatures.
0x423B28394E2C 79E1 C986 36B4 CE7B 193D ECC4 69C3 423B 2839